The development name (Project Monterey) given to the Unix operating system initiative that was a collaborative effort begun in 1998 by IBM, SCO, Sequent and Intel. Using technologies from IBM's AIX operating system, SCO's UnixWare and Sequent's DYNIX/ptx platform, the project focused on creating an open, flexible version of Unix for the Intel Pentium and Itanium CPUs as well as PowerPC machines. Released in 2000 as AIX 5L OS, it enables support for both platforms with a single source tree and common development environment.